Blue light

To evaluate the treatment results of combined blue light (415 nm wavelength) and red light (633 nm wavelength) therapy for patients with severe acne vulgaris. Subjects and methods: A pre-post comparative interventional study on 30 patients with severe acne vulgaris, examined and treated at the National Hospital of Dermatology and Venereology from July 2022 to June, 2023.

5p vipanly 28-10-2024 2 0   Download

In this study, we report on the hydrothermal synthesis of ZnO nanorods and the change in photocatalytic properties with different hydrothermal temperatures in the decomposition of Methylene blue (MB) and Rhodamine B (RhB) under visible light.

11p viengfa 28-10-2024 2 1   Download

The materials with a spinel structure have gotten some attention for their resistance to oxidizing/reducing agents and their application in many fields such as pigments, refractory, electronic engineering, magnetism, and energy storage materials.

8p vifilm 11-10-2024 1 0   Download

The aim of this study was to investigate the photocatalytic activity improving of TiO2, Ag-TiO2 as photocatalysts which immobilized on perlite granules to degrade MB from synthetic wastewater under solar light irradiation. The photocatalytic mechanisms induced by solar light responsive Ag-TiO2/perlite composite was also proposed to demonstrate the photodegradation of MB cationic dye.

7p vikwong 29-09-2024 3 1   Download

The study will focus on monitoring defects and finding out the nature of these defects. Bulk GaN was irradiated by a 2 MeV electron beam at a fluence of 5×1016 cm2 and studied by deep-level transient spectroscopy (DLTS). After irradiation, a broad peak, including at least two traps, was detected. The trap D1 (EC −0.16 eV) observed from a broad peak is induced during the annealing process below 550K and completely annealed out at 550K after 10 hours.

6p dianmotminh02 03-05-2024 18 4   Download

Bài viết Khái niệm về CAV và ứng dụng trong đo lường kiểm soát chất lượng chế tạo sản phẩm trình bày tóm tắt tổng quan về nguyên lý phương pháp đo lường quang học không tiếp xúc sử dụng ánh sáng có cấu trúc màu xanh dương (blue light) để đo quét lấy dữ liệu các bề mặt 3D và ứng dụng cho việc kiểm tra chất lượng chế tạo của một sản phẩm cơ khí theo phương pháp CAV với phần mềm GOM Inspection Professional.

3p vicaptainmarvel 21-04-2023 12 4   Download

The thesis focused on the synthesis of Mn, Ce, C doped ZnO nanoparticles materials and doped ZnO with multi-layered carbon nanotube nanocomposite materials and assessed their photo-oxidative potentiality through photocatalytic reactions of methylene blue (MB) decomposition in aqueous solution under visible light.

30p capheviahe27 23-02-2021 20 5   Download

The application of the catalysts to photocatalytic degradation of methylene blue (MB) was tested under visible light irradiation. From photocatalytic result, we found that all Zn2SnO4/CNTs composite catalysts exhibit higher MB degradation activity than add Zn2SnO4.

6p tamynhan8 04-11-2020 7 1   Download

The objectives of the thesis: The thesis focused on the synthesis of Mn, Ce, C doped ZnO nanoparticles materials and doped ZnO with multi-layered carbon nanotube nanocomposite materials and assessed their photo-oxidative potentiality through photocatalytic reactions of methylene blue (MB) decomposition in aqueous solution under visible light.

30p phongtitriet000 08-08-2019 44 4   Download

The photocatalytic oxidation of reactive blue 2 and reactive red 120 has been studied by using TiO2 Degussa P25 as catalyst and UV-light. The formation of intermediate molecules could be predicted on the basic of point charge calculations on all the individual atoms of the dyes. The agreement between calculations from quantum theory and the results of experiments was the background to establish a pathway for degradation of reactive dyes. A plausible mechanism of dye photodegradations is discussed.

6p uocvong03 24-09-2015 87 3   Download

An optogenetic upgrade for the tet - OFF system fused the inhibitor to the blue light-responsive B-LID degron and optimized the performance of this construct with regard to the number of Med25VBD repeats. This approach resulted in an optogenetic upgrade of the popular Tet-OFF (TetR-VP64, tetO7-PhCMVmin)  system  that  allows tunable, blue light-inducible gene expression in HEK-293T  cells.

5p thuyancn 01-06-2015 30 5   Download

Cryptochromes are blue-light photoreceptors sharing sequence similarity to photolyases, a class of flavoenzymes catalyzing repair ofUV-damagedDNAvia electron transfer mechanisms. Despite significant amino acid sequence simi-larity in both catalytic and cofactor-binding domains, cryptochromes lack DNA repair functions associated with photolyases, and the molecular mechanism involved in cryptochrome signaling remains obscure.

8p tumor12 20-04-2013 38 3   Download

The protective role of reactive oxygen scavengers against photodamage was studied in isolated photosystem (PS) I submembrane fractions illumin-ated (2000lEÆm )2 Æs )1 ) for various periods at 4
C. The photochemical activity of the submembrane fractions measured as P700 photooxidation was significantly protected in the presence of histidine orn-propyl gallate. Chlorophyll photobleaching resulting in a decrease of absorbance and fluorescence, and a blue-shift of both absorbance and fluorescence maxi-mum in the red region, was also greatly delayed in the presence of these scavengers. ...

0p awards 05-04-2013 56 4   Download

We report on the results obtained by measuring the stoi-chiometry of antenna polypeptides in Photosystem I (PSI) fromArabidopsis thaliana. This analysis was performed by quantification of Coomassie blue binding to individual LHCI polypeptides, fractionation by SDS/PAGE, and by the use of recombinant light harvesting complex of Photo-system I (Lhca) holoproteins as a standard reference. Our results show that a single copy of each Lhca1–4 polypeptide is present in Photosystem I.

0p awards 05-04-2013 31 2   Download

H2 -forming methylenetetrahydromethanopterin dehydro-genase (Hmd) is an unusual hydrogenase present in many methanogenic archaea. The homodimeric enzyme dubbed
metal-free hydrogenase does not contain iron–sulfur clus-ters or nickel and thus differs from [Ni-Fe] and [Fe-Fe] hydrogenases, which are all iron–sulfur proteins. Hmd preparations were found to contain up to 1 mol iron per 40 kDa subunit, but the iron was considered to be a con-taminant as none of the catalytic and spectroscopic pro-perties of the enzyme indicated that it was an essential component....

10p dell39 03-04-2013 52 4   Download

The core light-harvesting LH1 protein fromRhodospirillum rubrumcan dis-sociate reversibly in the presence ofn-octyl-b-d-glucopyranoside into smal-ler subunit forms, exhibiting a dramatic blue-shift in absorption. During this process, two main species are observed: a dimer that absorbs at 820 nm (B820) and a monomer absorbing at 777 nm (B777).

8p media19 06-03-2013 38 3   Download

The plant blue light receptor phototropin comprises a protein kinase domain and two FMN-binding LOV domains (LOV1 and LOV2). Blue light irradiation of recombinant LOV domains is conducive to the addition of a cysteinyl thiolate group to carbon 4a of the FMN chromophore, and spontaneous cleavage of that photoadduct completes the photocycle of the receptor.

15p media19 05-03-2013 18 2   Download

Exploring enzymatic mechanisms at a molecular level is one of the major challenges in modern biophysics. Based on enzyme structure data, as obtained by X-ray crystallography or NMR spectroscopy, one can suggest how substrates and products bind for catalysis.

14p vinaphone15 25-02-2013 42 2   Download

Trị nám an toàn bằng ánh sáng Phương pháp này dùng ánh sáng đa năng Blue Light để triệt tiêu tận gốc nguyên nhân gây nám. Sự rối loạn chức năng của các cơ quan nội tạng bên trong cơ thể, tiếp xúc với ánh nắng lâu dài hay trạng thái tinh thần căng thẳng đều có thể gây ra nám. Các chuyên gia thẩm mỹ khuyên rằng, để việc điều trị nám có kết quả tốt cần phải trải qua các bước sau: loại nám trên bề mặt da, giải quyết triệt để nguyên nhân gây nám từ bên trong,...

4p tieuyeuquai456 10-10-2012 77 3   Download

Nội dung trình bày gồm 7 chương: chương 1 chơi rock, chương 2 chơi điệu blues, chương 3 chơi điệu shuffle blues, chương 4 chơi điệu funk, chương 5 chơi điệu light funk, chương 6 chơi hard rock, chương 7 chơi điệu bossa nova.

100p vhnt_123 23-04-2012 1953 424   Download