This work presents data confirming the existence of a scan speed related phenomenon in contact-mode atomic force microscopy (AFM). Specifically, contact-resonance spectroscopy is used to interrogate this phenomenon. Above a critical scan speed, a monotonic decrease in the recorded contact-resonance frequency is observed with increasing scan speed. Proper characterization and understanding of th...

This paper presents first a numerical investigation into a novel class of wave motions in narrow open channels. The distinctive condition on these motions is that: – dissipation in vicinity of contact line is described by De Gennes approach; – the macroscopic lines of contact between the free surface and the sides of the channel move with velocity proportional to cosine of dynamic contact angle...

Intergroup contact and evaluations about race-based exclusion were assessed for majority and minority students in fourth, seventh, and tenth grades (N = 685). Students were presented with scenarios depicting cross-race relations in contexts of dyadic friendship, parental discomfort, and peer group disapproval. Participants reporting higher levels of intergroup contact gave higher ratings of wro...

The paper introduces some details of new hand-held sensor with extended vibration frequency measurement range till 20 kHz. The sensor provides new diagnostics capabilities especially for rolling/ball bearings and gearboxes. It is related to discovering the unknown before behavior of one point contact metal to metal. It is found that traditional transfer function is incorrectly described after r...

BACKGROUND: Contact dermatitis to cosmetics is a common dermatosis, especially in adults and professionals who handle them. OBJECTIVE: The objective of this study was to evaluate the frequency of sensitization to cosmetics ́ components in patients with suspected allergic contact dermatitis and to identify the main sensitizers related to occupational contact dermatitis. METHODS: During the period...

BACKGROUND Contact dermatitis to cosmetics is a common dermatosis, especially in adults and professionals who handle them. OBJECTIVE The objective of this study was to evaluate the frequency of sensitization to cosmetics' components in patients with suspected allergic contact dermatitis and to identify the main sensitizers related to occupational contact dermatitis. METHODS During the perio...

This paper reports two types of compact dual-band bandpass filters for wireless local area network (WLAN) applications operating at two frequency bands of 2.4 and 5.2 GHz. The two types of filters (contact-type and capacitive-type) are focused on their digital mode operations in order to alternatively select the operational frequency band of the WLAN. Different types of micromachined frequency-...

Protein contact dermatitis (PCD) is a contact dermatitis caused by high-molecular-weight proteins. This entity has been reported with increasing frequency, most commonly as occupational hand dermatitis in food handlers. Clinically, it is characterized by a chronic and recurrent dermatitis with erythema, scaling, and fissures with acute exacerbations occurring a few minutes after contact with of...