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BiOCl/KBiO3 p-n heterostructures with hierarchical mesoporous architectures were successfully synthesized via a facile in situ method. The X-ray powder diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and scanning electron microscope (SEM) results indicate the formation of heterojunctions between BiOCl and KBiO3. The photocatalytic performance of the as-prepared samples was investigated by the degradation of dye Rhodamine B (RhB) under visible light irradiation. BiOCl/KBiO3 composite has never been used to photodegrade the RhB which is a common dye and very difficult to degrade. The results demonstrated that KBiO3 combined with proper amount of BiOCl nanosheets exhibited high efficiency in the photocatalytic process, and BiOCl/KBiO3 with the molar ratio of 70/30 demonstrated the highest photocatalytic activity due to its large surface area, excellent charge separation characteristics and the suppressed recombination of electron-hole pairs. The results of active species detection reveal that the superoxide radical anions (O2-), hydroxyl free radicals (·OH), photogenerated holes (h+) and photogenerated electrons (e-) reactive species work together for the photocatalytic degradation of RhB. A possible and new mechanism of photocatalysis that differs from other teams was also explored and proposed. The present study will benefit the development of the new p-n heterojunction photocatalysts and would be of great importance to meet ever-increasing environmental demands in the future.

ABSTRACT The vertical wall attached jet ventilation has the advantages of good air supply quality, low energy consumption and uniform air distribution, which can improve the environmental quality, reduce heating energy consumption and increase the healthy brood rate when applied to the gosling house in cold region. In order to investigate the distribution of the air flow field and the temperature field in the gosling barn by the computational fluid dynamics method, the three-dimensional steady state simulation of the air flow field and the temperature field is carried out in this study. The results show that the maximum air velocity in the living area of goslings exceeds 0.5m/s when the air supply velocity is greater than 1.8m/s, and goslings feel blowing. When the air supply velocity is lower than 0.8m/s, the average air velocity in the gosling living area is lower than 0.2m/s, and the ventilation is insufficient. When the air supply velocity v=1.5m/s and temperature t=305.15k, the average air velocity in the gosling living area was 0.40m/s, the average temperature was 305.20k, the horizontal sticking range of the air supply air was 7.0m, the Air Diffusion Performance Index of the gosling house was 100%. Ventilation is the best.

ABSTRACT Objectives Evaluate the application value of 3D printing technology in measuring acetabular bone defect area in adult patients diagnosed with developmental dysplasia of the hip (DDH). Methods 23 cases of DDH requiring total hip replacement surgery were enrolled in this study. Preoperative examination confirmed the standard pelvic plain films Crowe, including 3 cases of Crowe I, 7 Crowe II, and 13 Crowe III. The 3D printing technology was used to print the hip model before the operation. Based on the pre-printed model, pre-operative planning and surgical procedures were established. The area of the acetabular bone defects was measured, the selected size prosthesis was recorded, and the surgery was performed (group A). The actual acetabular bone defect area and the prosthesis size were also recorded (group B). Results The comparative results indicated that the actual acetabular defect area measured intraoperatively and the area measured using the 3D printing technology did not significantly differ for all participants (all P>0.05). Conclusion Preoperative model can accurately measure the acetabular bone defect area for DDH. It is significant to develop individualized implants for DDH patients treated with the 3D printing technique. Level of Evidence IV: Case series.

Density functional theory (DFT) calculation and Raman scattering experiment have been applied to investigate an important essential fatty acid, α-linolenic acid (ALA). The DFT calculation was performed with geometry optimization and harmonic vibration using B3LYP functions with polarized 6-311+G(d,p) basis. The DFT calculated vibrational modes of ALA molecule are in excellent agreement with the Raman experimental results. A complete vibrational modes assignment is provided on the basis of potential energy distribution calculation. In addition, the DFT calculation and Raman experiment indicate that the relative intensity ratio of two characteristic modes at 1660 cm-1 and 1440 cm-1 is correlated with the number of C=C double bond in the acid chain, which may provide a simple and convenient method to differentiate ALA with other types of unsaturated fatty acids. Furthermore, the Mulliken atomic charge distribution and frontier molecular orbitals of ALA molecule were calculated.

Abstract: Pellagra is a nutritional disease caused by a deficiency of niacin. It may lead to death if not identified and treated timely. We review the literature and report a female patient presented with clinical features of pellagra as a complication of Crohn's disease.

Objetivo: Examinar se uma história de periodontite (PD) antes do tratamento antidiabético está associada a risco de ocorrência de artrite reumatoide (AR) em pacientes com diabetes melittus (DM) tratados de novo. Métodos: Fizemos um estudo retrospectivo populacional com os dados de reivindicações do National Health Insurance (NHI) de 1997-2009 referentes a um milhão de indivíduos representativos da totalidade de matriculados. Adultos com DM (≥ 20 anos) que iniciaram o tratamento antidiabético durante 2001-2009 foram classificados como pacientes DM tratados de novo. Identificamos 7.097 indivíduos DM com história de PD em um intervalo de um ano antes do tratamento antidiabético (data-índice). Na equiparação desses 7.097 indivíduos para idade por ocasião da data-índice, gênero e ano da data-índice, extraímos aleatoriamente 14.194 pacientes DM sem história de PD em um intervalo de um ano antes do tratamento antidiabético. As razões de risco ajustadas (aRR) com um intervalo de confiança (IC) de 95% foram calculadas mediante a aplicação do modelo de riscos proporcionais de Cox com o objetivo de quantificar a associação entre história de PD e risco de AR. Resultados: Em comparação com pacientes DM sem exposição à PD no intervalo de um ano antes do tratamento antidiabético, RR bruta e RR ajustada para AR entre pacientes DM e com exposição à PD no intervalo de um ano antes do tratamento antidiabético foram, respectivamente, 4,51 (IC 95%, 1,39-14,64) e 3,77 (IC 95%, 1,48-9,60). Conclusão: A exposição à PD no intervalo de um ano antes do tratamento antidiabético foi associada a maior risco de AR em pacientes DM tratados de novo. A ausência do status de tabagismo em nível individual é importante limitação desse estudo.