The spatial distribution of polybrominated diphenyl ethers (PBDEs) and several alternative non-PBDE, non-regulated brominated flame retardants (BFRs) in air and seawater and the air-seawater exchange was investigated in East Greenland Sea using high-volume air and water samples. Total PBDE concentrations (Ó₁₀PBDEs) ranged from 0.09 to 1.8 pg m⁻³ in the atmosphere and from 0.03 to 0.64 pg L⁻¹ in...

The femtosecond transient absorption (TA) characterization of a new benzothiadiazole (BT)-based donor-acceptor conjugated copolymer, poly[(2,6-dithieno[3,2-b:2',3'-d]thiophene)-alt-(4,7-di(4-octyldodecylthiopen-2-yl)-2,1,3-benzo[c][1,2,5]thiadiazole (PBT), as well as its fluorinated derivatives, PFBT and PDFBT, is carried out. Additionally, bulk heterojunction (BHJ) films consisting of the copo...

Griscelli syndrome is a rare autosomal recessive disorder characterized by partial albinism with variable immunodeficiency. Silvery gray hair with large, clumped melanosomes on microscopy of hair shafts are diagnostic. The commonest complication leading to mortality includes lymphohistiocytic proliferation in various organs, including the brain. We present a child with classic clinical features...

Pigment in animal tissue results from the union of 2 substances: a colorless chromogen and a ferment or enzyme which activates the chromogen. Where either of these is absent there is no pigment, or, if present but in insufficient amount, the tissue is lacking in pigment in a proportionate degree. Lack of pigment in tissue is known as albinism. It is a hereditary genetic defect. The entire body ...

BACKGROUND The main purpose of this study was to assess the factorial validity and reliability of the Iranian versions of the personality and behavior system scales (49 items) of the AHDQ (The Adolescent Health and Development Questionnaire) and interrelations among them based on Jessor's PBT (Problem Behavior Theory). METHODS A multi-staged approach was employed. The cross-cultural adaptatio...

BACKGROUND An increased demand for accountability and transparency in medicine have initiated a shift toward a more objective and standardized approach for postgraduate medical training. OBJECTIVE To develop and evaluate an objective method to assess clinical competence of postgraduate year 1 surgery residents. DESIGN Thirty-one postgraduate year 1 surgery residents, who had been trained in...

Griscelli syndrome is a rare disease characterized by pigment dilution, partial albinism, variable cellular immunodeficiency, and an acute phase of uncontrolled T-lymphocyte, and macrophage activation. Griscelli et al described this syndrome in 1978. Since then, only in approximately 60 cases have been reported, most from the Turkish, and Mediterranean population. In microscopic examination, si...

Chediak-Higashi syndrome (CHS) is a very rare autosomal recessive immunodeficiency disorder characterized by partial albinism, recurrent pyogenic infections, and large granules in all granule-containing cells. The author describes a Thai girl who was the first case of CHS in Thailand. She presented in the accelerated phase of CHS, which leads to repeated infections and bleeding, often resulting...

BACKGROUND Fatigue, cognitive deficits, and depression are frequently reported but often undertreated symptoms that can profoundly affect daily life in patients with primary brain tumors (PBTs). To evaluate the effects of the psychostimulant modafinil on fatigue, depression, health-related quality of life (HRQOL), and cognitive functioning in PBT patients, we performed a multicenter, double-bli...

This paper presents a 2D coupled Hele-Shaw flow approximation for predicting the flow-induced orientation of injection molded composite parts within a commercial concentration range. For a highly concentrated short glass fiber PBT suspension, the impact of inter-particle interactions and the orientation at the gate is investigated for a center-gated disk using a time-delayed orientation evoluti...