High uniformity red µ-LED array with a current efficiency of 2.6 cd/A and ns-level response time.

This paper demonstrates an AlGaInP-based 620-nm red micro-light-emitting-diode (µ-LED) array and studies the enhancement effect of the surface treatments using (NH)Sx solutions by comparing the characteristics of µ-LED arrays with and without the (NH)Sx treatment. Furthermore, our µ-LED array demonstrates a measurement of the current efficiency (2.6 cd/A), which improves the light output uniformity.

Rare isolated extra-hepatic bile duct injury: A case report.

Background: Extra-hepatic bile duct injury (EHBDI) is very rare among all blunt abdominal injuries. According to literature statistics, it only accounts for 3%-5% of abdominal injuries, most of which are combined injuries. Isolated EHBDI is more rare, with a special injury mechanism, clinical presentation and treatment strategy, so missed diagnosis easily occurs.

Cancer risk assessment for occupational exposure to chromium and nickel in welding fumes from pipeline construction, pressure container manufacturing, and shipyard building in Taiwan.

Objective: We assessed the cancer risks resulting from the exposure to chromium, hexavalent chromium (Cr (VI) ), oxidic nickel (Ni), and soluble Ni in welding fumes during pipeline and shipyard construction and pressure container manufacturing in Taiwan. We also determined the roles of welding performance and demographic characteristics during the exposure to Cr and Ni.

Methods: Personal air samples were collected for the analysis of Cr and Ni, and the concentrations of Cr (VI), oxidic Ni, and soluble Ni were quantified.

Mass-size distribution and concentration of metals from personal exposure to arc welding fume in pipeline construction: a case report.

We investigate exposure to welding fume metals in pipeline construction, which are responsible for severe respiratory problems. We analyzed air samples obtained using size-fractioning cascade impactors that were attached to the welders performing shielded metal and gas tungsten arc welding outdoors. Iron, aluminum, zinc, chromium, manganese, copper, nickel, and lead concentrations in the water-soluble (WS) and water-insoluble (WI) portions were determined separately, using inductively coupled plasma mass spectrometry.

Etiologic factors of gastric cardiac adenocarcinoma among men in Taiwan.

Aim: To elucidate etiologic associations between Helicobacter pylori (H pylori), lifestyle, environmental factors and gastric cardiac adenocarcinoma (GCA) among men.

Methods: A hospital-based case-control study was conducted in Taiwan from 2000 to 2009. All cases were newly confirmed as primary GCA.

Perceptions of general education on occupational health and safety among college students in Taiwan.

Undergraduate students were surveyed to assess their awareness of and interest in health and safety education. Out of 5258 questionnaires distributed among 66 colleges and universities in Taiwan, 4474 questionnaires were returned. The respondents were asked to provide demographic information and to respond to questions about a proposed college course in general occupational health and safety (OHS) and questions about 30 OHS topics.

Terminal nickel(ii) amide, alkoxide, and thiolate complexes containing amido diphosphine ligands of the type [N(o-C6H4PR2)2]- (R = Ph, (i)Pr, Cy).

A series of nickel(ii) complexes of the type [R-PNP]Ni(ER') ([R-PNP](-) = [N(o-C(6)H(4)PR(2))(2)](-); R = Ph, (i)Pr, Cy; E = NH, O, S; R' = Ph, (t)Bu) featuring unsupported, covalently bound pi-donor ligands have been prepared and characterized. The metathetical reactions of [R-PNP]NiCl (R = Ph, (i)Pr, Cy) with LiNHPh, NaOPh, or NaSPh, respectively, produced the corresponding anilide [R-PNP]Ni(NHPh), phenolate [R-PNP]Ni(OPh), and thiophenolate [R-PNP]Ni(SPh) derivatives. Treatment of [Ph-PNP]NiCl with either LiNH(t)Bu or NaO(t)Bu generated tert-butyl amide [Ph-PNP]Ni(NH(t)Bu) and tert-butoxide [Ph-PNP]Ni(O(t)Bu), respectively.

Prevalence and risks of chronic airway obstruction: a population cohort study in taiwan.

Background: This study investigated the prevalence, incidence, and hospitalization for chronic airway obstruction (CAO) in a population cohort.

Methods: Medical reimbursement claims from 1996 to 2002 based on a 1996 insured cohort of 167,372 persons from National Health Insurance, Taiwan, were used. We presented the chronological trends of CAO (International Classification of Diseases, Ninth Revision code 496) and the relationships between the CAO severity and age, sex, urbanization, and hospitalization and comorbidity for the population >/= 40 years old.

Diffusive sampling of methylene chloride with solid phase microextraction.

This study examined the characteristics of a solid phase microextraction (SPME) assembly as a passive sampler to determine the short-term exposure level (STEL) of methylene chloride. Two types of SPME fibers and six sampling-related factors were chosen and nested in an L(18) Taguchi's orthogonal array. Samples were thermally desorpted and analyzed by gas chromatograph equipped with an electron capture detector (GC/ECD).

Benzene C-H activation by platinum(II) complexes of bis(2-diphenylphosphinophenyl)amide.

The amido diphosphine complexes [PNP]PtMe and [PNP]PtOTf, where [PNP]- is bis(2-diphenylphosphinophenyl)amide, effectively activate the benzene C-H bond in the presence of an appropriate Lewis acid or base, leading to the formation of [PNP]PtPh quantitatively.