It has previously been reported that a peak at the spectral position of the second harmonic of an excitation laser can be generated in an inversion-symmetric medium in the regime of extreme nonlinear optics and that this peak may be exploited to measure the carrier-envelope phase of the excitation pulse. Here we revisit this phenomenon with regard to reverse engineering the carrier-envelope pha...

OBJECTIVE To optimize melanocyte/keratinocyte co-cultivation and to evaluate the effectiveness of autologous cultured epidermal grafts in the surgical treatment of stable vitiligo. DESIGN After optimization of melanocyte/keratinocyte cultures, achromic lesions were disepithelialized by means of programmed diathermosurgery (Timedsurgery) and covered with autologous epidermal grafts prepared fr...

BACKGROUND In vitiligo, melanocytes are gradually lost in depigmented macules of the skin. The disappearance of melanocytes has, however, not been clearly observed and consequently the aetiology of the disease (autoimmune, neural, cytotoxic) is still elusive. The starting point of vitiligo macules is frequently determined by local conditions such as wounds and excoriations, but may also follow ...

We report on experiments on vertically shaken binary granular mixtures, which separate into their components due to the external excitation. This well-known phenomenon, where large particles rise to the top of the mixture, is called the Brazil-nut effect. Recent theoretical findings predict also a reverse Brazil-nut effect, where large particles sink to the bottom of the container. We choose sp...

Many Gestalt illusions reveal a constructive aspect of perceptual processing where the experience contains more explicit spatial information than the visual stimulus on which it is based. The experience of Gestalt illusions often appears as volumetric spatial structures bounded by continuous colored surfaces embedded in a volumetric space. This suggests a field theory principle of visual repres...

BACKGROUND Reactive perforating collagenosis (RPC) is a rare form of transepithelial elimination, in which altered collagen is extruded through the epidermis. There are 2 types of RPC, acquired RPC (ARPC) and inherited RPC, while the latter is extremely rare. Here we report on 1 case of ARPC. METHODS A 73-year-old female was presented with strongly itchy papules over her back and lower limbs ...

Background: Lichen Planus (LP) is a unique, common inflammatory disorder that affects the skin, mucous membrane, nail and hair. Though lichen planus has distinct colour, morphology and distribution it can present with variability. Objective: To know the incidence, various clinical manifestations, and correlation with histopathological findings. Methods: A total of 50 Lichen planus patients atte...

Magnetic properties and martensitic transformation behaviors of NiCoMnAl metamagnetic shape memory alloys were investigated. The kinetic arrest phenomenon was observed at about 40K during thermomagnetization measurements. At temperatures ranging from 4.2 to 200K, magnetic field-induced reverse transformation was confirmed by a pulse magnetometer with a magnetic field up to 45 T. By plotting the...